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Computers and Concrete Volume 28, Number 5, November 2021 , pages 465-478 DOI: https://doi.org/10.12989/cac.2021.28.5.465 |
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Modal analysis and multi-objective optimization of lightweight analysis of the main beam of the concrete spreader |
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Shiying Zhang, Bo Song, Ke Zhang, Hongliang Chen, Defang Zou, Chang Liu, Chunxia Zhu, Dong Li and Wenda Yu
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| Abstract | ||
| On the premise of ensuring that the static performance of the concrete spreader is met, the first-order natural frequency of the concrete spreader is increased, and the weight of the main beam is reduced. ANSYS is used as an analysis tool to perform modal analysis on the concrete spreader. The natural frequency, mode shape and modal test verification will be obtained to ensure the accuracy of finite element model analysis. Using the ANSYS designxplorer module, the size of the main beam is set, and the response surface model between the parameter variables and the optimization objective is established according to the experimental design points. Screening algorithm and MOGA algorithm are used to multi-optimize the stress, first-order natural frequency and girder weight, and the optimal solution is obtained by comparison. The results of modal analysis are consistent with those of the experiment, and a set of optimal solutions is obtained through the optimization algorithm. The optimal solution obtained can meet the purpose of increasing the first-order natural frequency of the concrete spreader and reducing the weight of the main beam under the premise of ensuring the overall dynamic and static performance of the concrete spreader. | ||
| Key Words | ||
| ANSYS; concrete spreader; dynamic and static performance; modal analysis; response surface optimization | ||
| Address | ||
| Shiying Zhang: School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China; Northern Heavy Industries Group Co., Ltd., China Bo Song: Ccteg Shenyang Engineering Company, China Ke Zhang: School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China Hongliang Chen: Ccteg Shenyang Engineering Company, China Defang Zou: School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China Chang Liu: Ccteg Shenyang Engineering Company, China Chunxia Zhu: School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China Dong Li: Northern Heavy Industries Group Co., Ltd., China Wenda Yu: School of Mechanical Engineering, Shenyang Jianzhu University, Shenyang, China | ||